10. b1d2 [%c_highlight d2;keyPressed;none;opacity;0.8;square;d2;persistent;false,c3;keyPressed;none;opacity;0.8;square;c3;persistent;false] Where should the knight go, to d2 or c3 $2 This is a frequent question in positions with this type of structure, and it's not so easy to answer. The c3-square looks a little more natural to me, but the idea of putting ​​the knight on d2 is that after Ne5 it can go to f3, reinforcing the central position. My friend and mentor, Brazilian GM Jaime Sunye, liked to say that if one knight goes to c3, the other should go to d7, and if one goes to d2, the other goes to c6. I have always found this suggestion curious and have remembered it during several games, although I'm not 100\% sure of its validity. 10... f8e8 A new move. 11. f3e5 This is not the most accurate move since it allows Black to change the pawn structure conveniently. 11... c5d4 [%c_effect d4;square;d4;type;GreatFind;persistent;true] Aronian takes the opportunity to capture on d4 while White is forced to recapture with a pawn, changing the structure to a static center. 11...Nc6 and 11...Nbd7 are also more or less equal, but the move played is safer. 12. e3d4 